| Abstract: | The concept of partial averaging of signal fluctuations in a stretched turbulent medium is considered. Such uncontrollable averaging over time, frequency, or space arises from the mutual influence of signals scattered by irregularities of different scales (or different scattering layers) on fluctuations of the received signal intensity. The scintillation index of a partially averaged field is defined for the averaging action of a radiation source of finite angular dimensions. The proposed concept and obtained results may be useful in many applications as a development of the statistical theory of wave propagation in random media.Scientific-Research Institute of Radiophysics. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 37, No. 6, pp. 754–762, June, 1994. |
